Ethan Couch, now 21, had a blood-alcohol level three times the legal limit for adults when he crashed a pickup in June 2013, killing four people and seriously injuring two others.

The case garnered notoriety after a psychologist testified that the 16-year-old suffered from "affluenza" — claiming that his dysfunctional relationship with his wealthy parents prevented him from having any sense of personal responsibility.

He pleaded guilty to intoxication manslaughter and was controversially sentenced to 10 years of probation and rehab.

Two years later, video posted to Twitter appeared to show him playing beer pong — a probation violation. A short time later, he missed a meeting with his probation officer, and he and his mother then fled to Mexico.

The pair were eventually tracked to the resort town of Puerto Vallarta after they used a cellphone to order a Domino's pizza.

From left, mugshots of Tonya Couch from December 2015, January 2016, May 2016, March 2018 and June 2018.

He was released April 2, days before his 21st birthday. He has a 9 p.m. curfew and a GPS ankle monitor, as well as a patch to monitor his alcohol use and an ignition device to prevent him from driving while intoxicated.

Prosecutors also alleged last year that Tonya Couch violated her bond conditions, claiming that she drank a beer at a sports bar and held a rifle at a gun show.

Judge Wayne Salvant ruled that Couch could remain free on bond at the time, saying that he wouldn't put her in jail for sipping a beer but that she needed to use common sense.